US4260418AExpiredUtility

Method for producing molybdenum bearing ferrochromium

Assignee: ALLEGHENY LUDLUM STEELPriority: Sep 4, 1979Filed: Sep 4, 1979Granted: Apr 7, 1981
Est. expirySep 4, 1999(expired)· nominal 20-yr term from priority
Inventors:Orville W. Reen
C22C 35/005
28
PatentIndex Score
0
Cited by
12
References
5
Claims

Abstract

An improved method for producing a low carbon, low nitrogen ferrochromium containing molybdenum. The method comprises the steps of blending particles of high carbon ferrochromium and particles of an oxygen and molybdenum bearing compound, heat treating the blend in a vacuum at temperatures of 1600° F. or over, and pressures of 10 torr or below, and cooling the blend. The improvement of this invention comprises the use of a high carbon ferrochromium and an oxygen and molybdenum bearing compound as the original materials.

Claims

exact text as granted — not AI-modified
I claim: 
     
       1. A method for producing a low nitrogen, low carbon ferrochromium containing molybdenum comprising the steps of blending particles of a material consisting essentially of a high carbon ferrochromium and particles of an oxygen and molybdenum bearing compound, heat treating the blend in a vacuum at a temperature of 1600° F. or over and a pressure of 10 torr or below and cooling the blend. 
     
     
       2. A method according to claim 1 wherein the oxygen and molybdenum bearing compound is molybdic oxide. 
     
     
       3. A method according to claim 1 where the heat treating occurs at a pressure of about 0.15 torr. 
     
     
       4. A method according to claim 1 where the heat treating occurs at a temperature of about 2250° F. 
     
     
       5. A method according to claim 1 where the other oxygen containing compound is from the group consisting of oxides of iron, chromium and ferrochromium.

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